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<a name="gst-plugins-base-libs-Codec-utilities"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-Codec-utilities.top_of_page"></a>Codec utilities</span></h2>
<p>Codec utilities — Miscellaneous codec-specific utility functions</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-Codec-utilities.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-sample-rate-from-index" title="gst_codec_utils_aac_get_sample_rate_from_index ()">gst_codec_utils_aac_get_sample_rate_from_index</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-index-from-sample-rate" title="gst_codec_utils_aac_get_index_from_sample_rate ()">gst_codec_utils_aac_get_index_from_sample_rate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-profile" title="gst_codec_utils_aac_get_profile ()">gst_codec_utils_aac_get_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-level" title="gst_codec_utils_aac_get_level ()">gst_codec_utils_aac_get_level</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-channels" title="gst_codec_utils_aac_get_channels ()">gst_codec_utils_aac_get_channels</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-sample-rate" title="gst_codec_utils_aac_get_sample_rate ()">gst_codec_utils_aac_get_sample_rate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-caps-set-level-and-profile" title="gst_codec_utils_aac_caps_set_level_and_profile ()">gst_codec_utils_aac_caps_set_level_and_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()">gst_codec_utils_h264_get_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-level" title="gst_codec_utils_h264_get_level ()">gst_codec_utils_h264_get_level</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-caps-set-level-and-profile" title="gst_codec_utils_h264_caps_set_level_and_profile ()">gst_codec_utils_h264_caps_set_level_and_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-level-idc" title="gst_codec_utils_h264_get_level_idc ()">gst_codec_utils_h264_get_level_idc</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-profile" title="gst_codec_utils_h265_get_profile ()">gst_codec_utils_h265_get_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-tier" title="gst_codec_utils_h265_get_tier ()">gst_codec_utils_h265_get_tier</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-level" title="gst_codec_utils_h265_get_level ()">gst_codec_utils_h265_get_level</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-level-idc" title="gst_codec_utils_h265_get_level_idc ()">gst_codec_utils_h265_get_level_idc</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-caps-set-level-tier-and-profile" title="gst_codec_utils_h265_caps_set_level_tier_and_profile ()">gst_codec_utils_h265_caps_set_level_tier_and_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-mpeg4video-get-profile" title="gst_codec_utils_mpeg4video_get_profile ()">gst_codec_utils_mpeg4video_get_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-mpeg4video-get-level" title="gst_codec_utils_mpeg4video_get_level ()">gst_codec_utils_mpeg4video_get_level</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-mpeg4video-caps-set-level-and-profile" title="gst_codec_utils_mpeg4video_caps_set_level_and_profile ()">gst_codec_utils_mpeg4video_caps_set_level_and_profile</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-opus-create-caps" title="gst_codec_utils_opus_create_caps ()">gst_codec_utils_opus_create_caps</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="returnvalue">GstCaps</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-opus-create-caps-from-header" title="gst_codec_utils_opus_create_caps_from_header ()">gst_codec_utils_opus_create_caps_from_header</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-opus-parse-caps" title="gst_codec_utils_opus_parse_caps ()">gst_codec_utils_opus_parse_caps</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="returnvalue">GstBuffer</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-opus-create-header" title="gst_codec_utils_opus_create_header ()">gst_codec_utils_opus_create_header</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-opus-parse-header" title="gst_codec_utils_opus_parse_header ()">gst_codec_utils_opus_parse_header</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-Codec-utilities.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/pbutils/pbutils.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-Codec-utilities.description"></a><h2>Description</h2>
<p>Provides codec-specific ulility functions such as functions to provide the
codec profile and level in human-readable string form from header data.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-Codec-utilities.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-sample-rate-from-index"></a><h3>gst_codec_utils_aac_get_sample_rate_from_index ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
gst_codec_utils_aac_get_sample_rate_from_index
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> sr_idx</code></em>);</pre>
<p>Translates the sample rate index found in AAC headers to the actual sample
rate.</p>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-sample-rate-from-index.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>sr_idx</p></td>
<td class="parameter_description"><p>Sample rate index as from the AudioSpecificConfig (MPEG-4
container) or ADTS frame header</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-sample-rate-from-index.returns"></a><h4>Returns</h4>
<p> The sample rate if <em class="parameter"><code>sr_idx</code></em>
is valid, 0 otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-index-from-sample-rate"></a><h3>gst_codec_utils_aac_get_index_from_sample_rate ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
gst_codec_utils_aac_get_index_from_sample_rate
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rate</code></em>);</pre>
<p>Translates the sample rate to the index corresponding to it in AAC spec.</p>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-index-from-sample-rate.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>rate</p></td>
<td class="parameter_description"><p>Sample rate</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-index-from-sample-rate.returns"></a><h4>Returns</h4>
<p> The AAC index for this sample rate, -1 if the rate is not a
valid AAC sample rate.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-profile"></a><h3>gst_codec_utils_aac_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_aac_get_profile (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *audio_config</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Returns the profile of the given AAC stream as a string. The profile is
normally determined using the AudioObjectType field which is in the first
5 bits of <em class="parameter"><code>audio_config</code></em>
</p>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig
as specified in the Elementary Stream Descriptor (esds)
in ISO/IEC 14496-1. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-profile.returns"></a><h4>Returns</h4>
<p> The profile as a const string and <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the profile could not be
determined.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-level"></a><h3>gst_codec_utils_aac_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_aac_get_level (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *audio_config</code></em>,
                               <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Determines the level of a stream as defined in ISO/IEC 14496-3. For AAC LC
streams, the constraints from the AAC audio profile are applied. For AAC
Main, LTP, SSR and others, the Main profile is used.</p>
<p>The <em class="parameter"><code>audio_config</code></em>
 parameter follows the following format, starting from the
most significant bit of the first byte:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>Bit 0:4 contains the AudioObjectType (if this is 0x5, then the
real AudioObjectType is carried after the rate and channel data)</p></li>
<li class="listitem"><p>Bit 5:8 contains the sample frequency index (if this is 0xf, then the
next 24 bits define the actual sample frequency, and subsequent
fields are appropriately shifted).</p></li>
<li class="listitem"><p>Bit 9:12 contains the channel configuration</p></li>
</ul></div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-level.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig
as specified in the Elementary Stream Descriptor (esds)
in ISO/IEC 14496-1. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-level.returns"></a><h4>Returns</h4>
<p> The level as a const string and <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the level could not be
determined.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-channels"></a><h3>gst_codec_utils_aac_get_channels ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
gst_codec_utils_aac_get_channels (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *audio_config</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Returns the channels of the given AAC stream.</p>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-channels.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig
as specified in the Elementary Stream Descriptor (esds)
in ISO/IEC 14496-1. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-channels.returns"></a><h4>Returns</h4>
<p> The channels or 0 if the channel could not be determined.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.10">1.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-sample-rate"></a><h3>gst_codec_utils_aac_get_sample_rate ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
gst_codec_utils_aac_get_sample_rate (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *audio_config</code></em>,
                                     <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Translates the sample rate index found in AAC headers to the actual sample
rate.</p>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-sample-rate.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig
as specified in the Elementary Stream Descriptor (esds)
in ISO/IEC 14496-1. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-get-sample-rate.returns"></a><h4>Returns</h4>
<p> The sample rate if sr_idx is valid, 0 otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix06.html#api-index-1.10">1.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-caps-set-level-and-profile"></a><h3>gst_codec_utils_aac_caps_set_level_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_codec_utils_aac_caps_set_level_and_profile
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *caps</code></em>,
                                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *audio_config</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Sets the level and profile on <em class="parameter"><code>caps</code></em>
 if it can be determined from
<em class="parameter"><code>audio_config</code></em>
. See <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-level" title="gst_codec_utils_aac_get_level ()"><code class="function">gst_codec_utils_aac_get_level()</code></a> and
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-aac-get-profile" title="gst_codec_utils_aac_get_profile ()"><code class="function">gst_codec_utils_aac_get_profile()</code></a> for more details on the parameters.
<em class="parameter"><code>caps</code></em>
 must be audio/mpeg caps with an "mpegversion" field of either 2 or 4.
If mpegversion is 4, the "base-profile" field is also set in <em class="parameter"><code>caps</code></em>
.</p>
<div class="refsect3">
<a name="gst-codec-utils-aac-caps-set-level-and-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> to which level and profile fields are to be added</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig
as specified in the Elementary Stream Descriptor (esds)
in ISO/IEC 14496-1. (See below for more details). </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-aac-caps-set-level-and-profile.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the level and profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-get-profile"></a><h3>gst_codec_utils_h264_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_h264_get_profile (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *sps</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the profile indication (profile_idc) in the stream's
sequence parameter set into a string. The SPS is expected to have the
following format, as defined in the H.264 specification. The SPS is viewed
as a bitstream here, with bit 0 being the most significant bit of the first
byte.</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>Bit 0:7   - Profile indication</p></li>
<li class="listitem"><p>Bit 8     - constraint_set0_flag</p></li>
<li class="listitem"><p>Bit 9     - constraint_set1_flag</p></li>
<li class="listitem"><p>Bit 10    - constraint_set2_flag</p></li>
<li class="listitem"><p>Bit 11    - constraint_set3_flag</p></li>
<li class="listitem"><p>Bit 12    - constraint_set3_flag</p></li>
<li class="listitem"><p>Bit 13:15 - Reserved</p></li>
<li class="listitem"><p>Bit 16:24 - Level indication</p></li>
</ul></div>
<div class="refsect3">
<a name="gst-codec-utils-h264-get-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>sps</p></td>
<td class="parameter_description"><p>Pointer to the sequence parameter set for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h264-get-profile.returns"></a><h4>Returns</h4>
<p> The profile as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-get-level"></a><h3>gst_codec_utils_h264_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_h264_get_level (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *sps</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the level indication (level_idc) in the stream's
sequence parameter set into a string. The SPS is expected to have the
same format as for <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()"><code class="function">gst_codec_utils_h264_get_profile()</code></a>.</p>
<div class="refsect3">
<a name="gst-codec-utils-h264-get-level.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>sps</p></td>
<td class="parameter_description"><p>Pointer to the sequence parameter set for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h264-get-level.returns"></a><h4>Returns</h4>
<p> The level as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-caps-set-level-and-profile"></a><h3>gst_codec_utils_h264_caps_set_level_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_codec_utils_h264_caps_set_level_and_profile
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *caps</code></em>,
                                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *sps</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Sets the level and profile in <em class="parameter"><code>caps</code></em>
 if it can be determined from <em class="parameter"><code>sps</code></em>
. See
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-level" title="gst_codec_utils_h264_get_level ()"><code class="function">gst_codec_utils_h264_get_level()</code></a> and <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()"><code class="function">gst_codec_utils_h264_get_profile()</code></a>
for more details on the parameters.</p>
<div class="refsect3">
<a name="gst-codec-utils-h264-caps-set-level-and-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> to which the level and profile are to be added</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>sps</p></td>
<td class="parameter_description"><p>Pointer to the sequence parameter set for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h264-caps-set-level-and-profile.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the level and profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-get-level-idc"></a><h3>gst_codec_utils_h264_get_level_idc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a>
gst_codec_utils_h264_get_level_idc (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *level</code></em>);</pre>
<p>Transform a level string from the caps into the level_idc</p>
<div class="refsect3">
<a name="gst-codec-utils-h264-get-level-idc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>level</p></td>
<td class="parameter_description"><p>A level string from caps</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h264-get-level-idc.returns"></a><h4>Returns</h4>
<p> the level_idc or 0 if the level is unknown</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h265-get-profile"></a><h3>gst_codec_utils_h265_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_h265_get_profile (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *profile_tier_level</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the profile indication (general_profile_idc) in the stream's
profile_level_tier structure into a string. The profile_tier_level is
expected to have the following format, as defined in the H.265
specification. The profile_tier_level is viewed as a bitstream here,
with bit 0 being the most significant bit of the first byte.</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>Bit 0:1   - general_profile_space</p></li>
<li class="listitem"><p>Bit 2     - general_tier_flag</p></li>
<li class="listitem"><p>Bit 3:7   - general_profile_idc</p></li>
<li class="listitem"><p>Bit 8:39  - gernal_profile_compatibility_flags</p></li>
<li class="listitem"><p>Bit 40    - general_progressive_source_flag</p></li>
<li class="listitem"><p>Bit 41    - general_interlaced_source_flag</p></li>
<li class="listitem"><p>Bit 42    - general_non_packed_constraint_flag</p></li>
<li class="listitem"><p>Bit 43    - general_frame_only_constraint_flag</p></li>
<li class="listitem"><p>Bit 44:87 - general_reserved_zero_44bits</p></li>
<li class="listitem"><p>Bit 88:95 - general_level_idc</p></li>
</ul></div>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>profile_tier_level</p></td>
<td class="parameter_description"><p>Pointer to the profile_tier_level
structure for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>profile_tier_level</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-profile.returns"></a><h4>Returns</h4>
<p> The profile as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h265-get-tier"></a><h3>gst_codec_utils_h265_get_tier ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_h265_get_tier (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *profile_tier_level</code></em>,
                               <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the tier indication (general_tier_flag) in the stream's
profile_tier_level structure into a string. The profile_tier_level
is expected to have the same format as for <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()"><code class="function">gst_codec_utils_h264_get_profile()</code></a>.</p>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-tier.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>profile_tier_level</p></td>
<td class="parameter_description"><p>Pointer to the profile_tier_level
for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>profile_tier_level</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-tier.returns"></a><h4>Returns</h4>
<p> The tier as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h265-get-level"></a><h3>gst_codec_utils_h265_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_h265_get_level (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *profile_tier_level</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the level indication (general_level_idc) in the stream's
profile_tier_level structure into a string. The profiel_tier_level is
expected to have the same format as for <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()"><code class="function">gst_codec_utils_h264_get_profile()</code></a>.</p>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-level.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>profile_tier_level</p></td>
<td class="parameter_description"><p>Pointer to the profile_tier_level
for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>profile_tier_level</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-level.returns"></a><h4>Returns</h4>
<p> The level as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h265-get-level-idc"></a><h3>gst_codec_utils_h265_get_level_idc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a>
gst_codec_utils_h265_get_level_idc (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *level</code></em>);</pre>
<p>Transform a level string from the caps into the level_idc</p>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-level-idc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>level</p></td>
<td class="parameter_description"><p>A level string from caps</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h265-get-level-idc.returns"></a><h4>Returns</h4>
<p> the level_idc or 0 if the level is unknown</p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h265-caps-set-level-tier-and-profile"></a><h3>gst_codec_utils_h265_caps_set_level_tier_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_codec_utils_h265_caps_set_level_tier_and_profile
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *caps</code></em>,
                                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *profile_tier_level</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Sets the level, tier and profile in <em class="parameter"><code>caps</code></em>
 if it can be determined from
<em class="parameter"><code>profile_tier_level</code></em>
. See <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-level" title="gst_codec_utils_h265_get_level ()"><code class="function">gst_codec_utils_h265_get_level()</code></a>,
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-tier" title="gst_codec_utils_h265_get_tier ()"><code class="function">gst_codec_utils_h265_get_tier()</code></a> and <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-h265-get-profile" title="gst_codec_utils_h265_get_profile ()"><code class="function">gst_codec_utils_h265_get_profile()</code></a>
for more details on the parameters.</p>
<div class="refsect3">
<a name="gst-codec-utils-h265-caps-set-level-tier-and-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> to which the level, tier and profile are to be added</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>profile_tier_level</p></td>
<td class="parameter_description"><p>Pointer to the profile_tier_level
struct. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>profile_tier_level</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-h265-caps-set-level-tier-and-profile.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the level, tier, profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-1.4">1.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-mpeg4video-get-profile"></a><h3>gst_codec_utils_mpeg4video_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_mpeg4video_get_profile
                               (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *vis_obj_seq</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the profile indication in the stream's visual object sequence into
a string. <em class="parameter"><code>vis_obj_seq</code></em>
 is expected to be the data following the visual
object sequence start code. Only the first byte
(profile_and_level_indication) is used.</p>
<div class="refsect3">
<a name="gst-codec-utils-mpeg4video-get-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>vis_obj_seq</p></td>
<td class="parameter_description"><p>Pointer to the visual object
sequence for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-mpeg4video-get-profile.returns"></a><h4>Returns</h4>
<p> The profile as a const string, or NULL if there is an error.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-mpeg4video-get-level"></a><h3>gst_codec_utils_mpeg4video_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_codec_utils_mpeg4video_get_level (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *vis_obj_seq</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Converts the level indication in the stream's visual object sequence into
a string. <em class="parameter"><code>vis_obj_seq</code></em>
 is expected to be the data following the visual
object sequence start code. Only the first byte
(profile_and_level_indication) is used.</p>
<div class="refsect3">
<a name="gst-codec-utils-mpeg4video-get-level.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>vis_obj_seq</p></td>
<td class="parameter_description"><p>Pointer to the visual object
sequence for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-mpeg4video-get-level.returns"></a><h4>Returns</h4>
<p> The level as a const string, or NULL if there is an error.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-mpeg4video-caps-set-level-and-profile"></a><h3>gst_codec_utils_mpeg4video_caps_set_level_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_codec_utils_mpeg4video_caps_set_level_and_profile
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *caps</code></em>,
                                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *vis_obj_seq</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>Sets the level and profile in <em class="parameter"><code>caps</code></em>
 if it can be determined from
<em class="parameter"><code>vis_obj_seq</code></em>
. See <a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-mpeg4video-get-level" title="gst_codec_utils_mpeg4video_get_level ()"><code class="function">gst_codec_utils_mpeg4video_get_level()</code></a> and
<a class="link" href="gst-plugins-base-libs-Codec-utilities.html#gst-codec-utils-mpeg4video-get-profile" title="gst_codec_utils_mpeg4video_get_profile ()"><code class="function">gst_codec_utils_mpeg4video_get_profile()</code></a> for more details on the
parameters.</p>
<div class="refsect3">
<a name="gst-codec-utils-mpeg4video-caps-set-level-and-profile.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> to which the level and profile are to be added</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>vis_obj_seq</p></td>
<td class="parameter_description"><p>Pointer to the visual object
sequence for the stream. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-mpeg4video-caps-set-level-and-profile.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the level and profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-opus-create-caps"></a><h3>gst_codec_utils_opus_create_caps ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="returnvalue">GstCaps</span></a> *
gst_codec_utils_opus_create_caps (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> rate</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> channels</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> channel_mapping_family</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> stream_count</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> coupled_count</code></em>,
                                  <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *channel_mapping</code></em>);</pre>
<p>Creates Opus caps from the given parameters.</p>
<div class="refsect3">
<a name="gst-codec-utils-opus-create-caps.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>rate</p></td>
<td class="parameter_description"><p>the sample rate</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>channels</p></td>
<td class="parameter_description"><p>the number of channels</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping_family</p></td>
<td class="parameter_description"><p>the channel mapping family</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_count</p></td>
<td class="parameter_description"><p>the number of independent streams</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>coupled_count</p></td>
<td class="parameter_description"><p>the number of stereo streams</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping</p></td>
<td class="parameter_description"><p>the mapping between the streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-opus-create-caps.returns"></a><h4>Returns</h4>
<p> The <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a>, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the parameters would lead to
invalid Opus caps.</p>
</div>
<p class="since">Since: <a class="link" href="ix08.html#api-index-1.8">1.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-opus-create-caps-from-header"></a><h3>gst_codec_utils_opus_create_caps_from_header ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="returnvalue">GstCaps</span></a> *
gst_codec_utils_opus_create_caps_from_header
                               (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a> *header</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a> *comments</code></em>);</pre>
<p>Creates Opus caps from the given OpusHead <em class="parameter"><code>header</code></em>
 and comment header
<em class="parameter"><code>comments</code></em>
.</p>
<div class="refsect3">
<a name="gst-codec-utils-opus-create-caps-from-header.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>header</p></td>
<td class="parameter_description"><p>OpusHead header</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>comments</p></td>
<td class="parameter_description"><p>Comment header or NULL. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-opus-create-caps-from-header.returns"></a><h4>Returns</h4>
<p> The <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a>.</p>
</div>
<p class="since">Since: <a class="link" href="ix08.html#api-index-1.8">1.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-opus-parse-caps"></a><h3>gst_codec_utils_opus_parse_caps ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_codec_utils_opus_parse_caps (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *caps</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> *rate</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *channels</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *channel_mapping_family</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *stream_count</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *coupled_count</code></em>,
                                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> channel_mapping[256]</code></em>);</pre>
<p>Parses Opus caps and fills the different fields with defaults if possible.</p>
<div class="refsect3">
<a name="gst-codec-utils-opus-parse-caps.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> to parse the data from</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>rate</p></td>
<td class="parameter_description"><p>the sample rate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>channels</p></td>
<td class="parameter_description"><p>the number of channels. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping_family</p></td>
<td class="parameter_description"><p>the channel mapping family. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>stream_count</p></td>
<td class="parameter_description"><p>the number of independent streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>coupled_count</p></td>
<td class="parameter_description"><p>the number of stereo streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping</p></td>
<td class="parameter_description"><p>the mapping between the streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> fixed-size=256]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-opus-parse-caps.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if parsing was successful, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix08.html#api-index-1.8">1.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-opus-create-header"></a><h3>gst_codec_utils_opus_create_header ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="returnvalue">GstBuffer</span></a> *
gst_codec_utils_opus_create_header (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> rate</code></em>,
                                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> channels</code></em>,
                                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> channel_mapping_family</code></em>,
                                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> stream_count</code></em>,
                                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> coupled_count</code></em>,
                                    <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *channel_mapping</code></em>,
                                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint16"><span class="type">guint16</span></a> pre_skip</code></em>,
                                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint16"><span class="type">gint16</span></a> output_gain</code></em>);</pre>
<p>Creates OpusHead header from the given parameters.</p>
<div class="refsect3">
<a name="gst-codec-utils-opus-create-header.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>rate</p></td>
<td class="parameter_description"><p>the sample rate</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>channels</p></td>
<td class="parameter_description"><p>the number of channels</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping_family</p></td>
<td class="parameter_description"><p>the channel mapping family</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_count</p></td>
<td class="parameter_description"><p>the number of independent streams</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>coupled_count</p></td>
<td class="parameter_description"><p>the number of stereo streams</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping</p></td>
<td class="parameter_description"><p>the mapping between the streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>pre_skip</p></td>
<td class="parameter_description"><p>Pre-skip in 48kHz samples or 0</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>output_gain</p></td>
<td class="parameter_description"><p>Output gain or 0</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-opus-create-header.returns"></a><h4>Returns</h4>
<p> The <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a> containing the OpusHead.</p>
</div>
<p class="since">Since: <a class="link" href="ix08.html#api-index-1.8">1.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-opus-parse-header"></a><h3>gst_codec_utils_opus_parse_header ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_codec_utils_opus_parse_header (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a> *header</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint32"><span class="type">guint32</span></a> *rate</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *channels</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *channel_mapping_family</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *stream_count</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> *coupled_count</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint8"><span class="type">guint8</span></a> channel_mapping[256]</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint16"><span class="type">guint16</span></a> *pre_skip</code></em>,
                                   <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint16"><span class="type">gint16</span></a> *output_gain</code></em>);</pre>
<p>Parses the OpusHead header.</p>
<div class="refsect3">
<a name="gst-codec-utils-opus-parse-header.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>header</p></td>
<td class="parameter_description"><p>the OpusHead <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstBuffer.html#GstBuffer-struct"><span class="type">GstBuffer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>rate</p></td>
<td class="parameter_description"><p>the sample rate. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>channels</p></td>
<td class="parameter_description"><p>the number of channels. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping_family</p></td>
<td class="parameter_description"><p>the channel mapping family. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>stream_count</p></td>
<td class="parameter_description"><p>the number of independent streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>coupled_count</p></td>
<td class="parameter_description"><p>the number of stereo streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>channel_mapping</p></td>
<td class="parameter_description"><p>the mapping between the streams. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> fixed-size=256]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>pre_skip</p></td>
<td class="parameter_description"><p>Pre-skip in 48kHz samples or 0. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>output_gain</p></td>
<td class="parameter_description"><p>Output gain or 0. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-codec-utils-opus-parse-header.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if parsing was successful, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
<p class="since">Since: <a class="link" href="ix08.html#api-index-1.8">1.8</a></p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-Codec-utilities.other_details"></a><h2>Types and Values</h2>
</div>
</div>
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